Re: Identifying THT resistor value + other Qs. [Electric blanket controller repair]
Some notes:
The printings on PCB in video read
[B]E199273
PCEM-1
94V-O
ROHS[/B]
which are the same as mine,
then on the other edge
[B]KDA6-2015[/B]
wheras mine reads
[B]KDA6-2012-04
2013-06-03[/B]
Then [URL="https://www.youtube.com/watch?v=5K5p7bOWtNo&ab_channel=Per-GunnarH.%C3%85gren&t=5m20s"]pause video at 5:20[/URL] and the colour code for the "S" big resistor seems...
Sirgu
Member
Last Activity: 01-06-2024, 04:51 AM
Joined: 11-01-2013
Location: Tartu
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Re: Identifying THT resistor value + other Qs. [Electric blanket controller repair]
Well that`s a yes and no.
-Yes, undoubtly I cannot be sure at this point that balnket is totally okay. All I know that its wiring is continuous circuit without any drawbacks while moving, bending blanket anyhow. But still suspicious about its wiring resistance change over time when material temperature rises or drops.
-On the other hand - No! Those LEDs flasing like that are not indicating the absence of blanket. I remember when the controller was still in working condition...Last edited by Sirgu; 02-16-2021, 03:22 PM.Leave a comment:
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Re: Identifying THT resistor value + other Qs. [Electric blanket controller repair]
This little fellow?...Leave a comment:
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Re: Identifying THT resistor value + other Qs. [Electric blanket controller repair]
Sure!
...Leave a comment:
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Re: Identifying THT resistor value + other Qs. [Electric blanket controller repair]
There are four triacs / transistors in this pcb design.
Two of them read:
[B]MAC
97A6
13H[/B]
One is:
[B]13001
98T[/B]
And the last one:
[B]A1015
GR011[/B]
Make and model of thing itself (if it helps anyhow):
[U][B]Rubicson KDA6-FT[/B] electric blanket [/U]
[URL="https://www.shpock.com/en-gb/i/WlIdP2l40gxUAx4u/vaermefilt"][some pictures here][/URL]...Leave a comment:
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Re: Identifying THT resistor value + other Qs. [Electric blanket controller repair]
Thanks everyone! It broadens my knowledge a lot.
[B]R_J[/B] - Yes, this original main issue resistor is open. And the burn mark is seemingly a long-term result. Not a sudden cause of resistor failure.
And there`s plenty of space to solder any of them there.
[B]stj[/B] - #2, #3 and #4 also have this kind of hard matt coating while #1 is glossy paint (or epoxy for that matter). I never knew the considerations for materials used for finishing. Likewise I don`t know...Leave a comment:
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Identifying THT resistor value + other Qs. [Electric blanket controller repair]
Hello,
I hope this fits well into "weird devices" category.
Please... anyone that knows better the science of resistors. Everything is on pictures.
Stuff written in green boxes are official values accordingly the packages and datasheets. The rest is the rest.
All I can add is that the subject`s background colour behind stripes is [B]blueish light gray[/B]. As resistor #2 in the row is rather beige and physically smaller, I think it`s not right replacement for the main issue.
As I didn`t had resistors #1 to #4 on hand reach at first...Last edited by Sirgu; 02-13-2021, 07:51 AM. -
Re: Please help identify this grease.
It`s nice to see this thread got back on track of electronics industry. Sry but some of those links to some colorful machinery greases were way off topic.
Dow Molykote EM-30L is good input here. I'll look into that.
By brief search it seems to be another product lacking in my region.Leave a comment:
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Re: Dumbest 'electronic' mistake you ever made
Probably not my dumbest one, but the first that comes to mind of recent mishaps:
I had just refurbished one laptop heatsink fan. Dismanteled, cleaned and relubricated `n all this stuff... and then hastily burnt the coil by giving it 12 volts with regulated power supply. Well, I had just priorly tested the sound of some usual case fans of desktop PC which were waiting for their turn. Forgot to adjust it back onto 5V by the time laptop fan got ready.
Conclusion: Always doublecheck your adjustments before...Leave a comment:
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Re: Please help identify this grease.
Tnx for addition. I'll look into that.
Meanwhile made this little reminder for myself:
[CODE][U]Electrolube SPG[/U] (Special Plastics Grease)
- the most [COLOR="SeaGreen"]promising info[/COLOR] from Datasheet:
...
* Tacky characteristic; high tenacity to stay in contact zone.
* Stays where placed even on vertical surfaces; ideal for plastic lubrication
...
Oil bleed / Separation (IP121): 5%
...
- the most [COLOR="Red"]dubious...Leave a comment:
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Re: Please help identify this grease.
[COLOR="Gray"]EDIT:
Misspelled name of white grease on main picture. Yea, it's [U]Smar[/U] TF as repeatedly written in later context.[/COLOR]
Thanks for very useful link!
Looks like I am about to start further searches towards [B]Electrolube SPG[/B] (the one you linked) and [B]Electrolube CG60[/B] (even more similar) as these seem to match the most.
Haven`t heard of such thing before. Let me know if there`s smth more that would come to your mind about it. Seems complicated...Leave a comment:
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Please help identify this grease.
Hey.
I hope this community has some people experienced on lubricants and greases of electronics industry.
-Check this picture and tell if you can determine this yellowish grease in right side.
It is widely used by quality brands in their products, where you meet plastic-against-plastic friction and/or bunch of plastic ratchets etc.
If anyone got interested there`s a gallery below with further explanations. Overall it might help leading to solution if someone has a hunch.
Thanks!... -
Re: New Members - please post your introductions here
Hello,
I`m from Estonia (the Baltic states, Eastern Europe). Amateur in the fields of electronics.
Although I first held soldering iron half of my life back, I don`t consider my experience as long as that. First jobs were probably smth like earphones 3.5 mm jacks, which resulted in good feeling of DIY but no decent sound quality or any long endurance after repair.
About 6-8 years ago I started to deepen into right techniques; tools; chemicals etc. Still fresh on circuit boards and SMD components....Leave a comment:
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